Audible signal for alarm units



FIG. 1 is a perspective view of an audible signal for alarm units showing our new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a top plan view thereof (of which a bottom plan view would be a mirror image);

FIG. 5 is a right side elevational view thereof (of which a left side elevational view would be a mirror image);

FIG. 6 is a cross-sectional view thereof taken on line 6--6 of FIG. 2, an internal mechanism of which is not shown; and,

FIG. 7 is a cross-sectional view thereof taken on line 7--7 of FIG. 2, an internal mechanism of which is not shown. 

The ornamental design for an audible signal for alarm units, as shown and described. 